1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "media/midi/usb_midi_device_factory_android.h"
10 #include "base/android/scoped_java_ref.h"
11 #include "base/bind.h"
12 #include "base/containers/hash_tables.h"
13 #include "base/lazy_instance.h"
14 #include "base/memory/scoped_vector.h"
15 #include "base/memory/weak_ptr.h"
16 #include "base/message_loop/message_loop.h"
17 #include "base/synchronization/lock.h"
18 #include "jni/UsbMidiDeviceFactoryAndroid_jni.h"
19 #include "media/midi/usb_midi_device_android.h"
25 typedef UsbMidiDevice::Factory::Callback Callback;
29 UsbMidiDeviceFactoryAndroid::UsbMidiDeviceFactoryAndroid() : delegate_(NULL) {}
31 UsbMidiDeviceFactoryAndroid::~UsbMidiDeviceFactoryAndroid() {
32 JNIEnv* env = base::android::AttachCurrentThread();
33 if (!raw_factory_.is_null())
34 Java_UsbMidiDeviceFactoryAndroid_close(env, raw_factory_.obj());
37 void UsbMidiDeviceFactoryAndroid::EnumerateDevices(
38 UsbMidiDeviceDelegate* delegate,
41 JNIEnv* env = base::android::AttachCurrentThread();
42 uintptr_t pointer = reinterpret_cast<uintptr_t>(this);
43 raw_factory_.Reset(Java_UsbMidiDeviceFactoryAndroid_create(env, pointer));
48 if (Java_UsbMidiDeviceFactoryAndroid_enumerateDevices(
49 env, raw_factory_.obj(), base::android::GetApplicationContext())) {
50 // Asynchronous operation.
53 // No devices are found.
54 ScopedVector<UsbMidiDevice> devices;
55 callback.Run(true, &devices);
58 // Called from the Java world.
59 void UsbMidiDeviceFactoryAndroid::OnUsbMidiDeviceRequestDone(
62 jobjectArray devices) {
63 size_t size = env->GetArrayLength(devices);
64 ScopedVector<UsbMidiDevice> devices_to_pass;
65 for (size_t i = 0; i < size; ++i) {
66 UsbMidiDeviceAndroid::ObjectRef raw_device(
67 env, env->GetObjectArrayElement(devices, i));
68 devices_to_pass.push_back(new UsbMidiDeviceAndroid(raw_device, delegate_));
71 callback_.Run(true, &devices_to_pass);
74 bool UsbMidiDeviceFactoryAndroid::RegisterUsbMidiDeviceFactory(JNIEnv* env) {
75 return RegisterNativesImpl(env);